this 16x12x1 boiler filter should be inspected annually and replaced if showing signs of loading

verifying the housing’s alignment and integrity is vital for system efficiency

Designed as a normally closed

Key Benefits for Technicians Direct Replacement Compatibility: Seamlessly replaces legacy SC4811 and 9555 thermostats

Operational Versatility: Non-directional flow allows for installation in any position across a wide temperature range of -40°F to +325°F

York S1-024-36279-000 Relay Els PW 17895 this 16x12x1 boiler filter shouldThe York S1 024 36279 000 is an OEM spec 2 pole switching relay designed for demanding HVACR applications requiring reliable circuit control. Engineered with Normally Open (NO) contacts, this component is optimized for dual circuit switching where low voltage signals must manage higher amperage loads. Featuring a 22VAC coil voltage, it integrates seamlessly into York and Johnson Controls systems that utilize specific control transformer outputs. The